Ventilator.



B. T. SCOTT.

VENTILA'I'OR. APBLIUATION FILED MAR. e; 1909.

' Patented Jan.4,191'0.

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. EDWARD T. SCOTT, OF PITTSBURG, PENNSYLVANIA.

VENTILATOR.

Specification of Letters Patent.

Application filed March 6, 1909. Serial No. 481,675.

To all whom it may concern:

Be it known that I, EDWARD T. Soon, a citizen of the United States ofAmerica, residing at Pittsburg, in the county of Allegheny and State ofPennsylvania, have invented certain new and useful Improvements inVentilators, of which the following is a specification, reference beinghad therein to the accompanying drawing.

This invention relates to ventilators, particularly designed for windowsand for admitting fresh air to a compartment and removing foul air,whereby the compartment will be thoroughly ventilated and maintained ina sanitary condition for the occupants of the compartment.

The invention has for its object to provide an adjustable ventilatorthat can be easily and quickly placed in a window-frame and retainedtherein by one of the sashes for admitting fresh air to a compartmentwithout causing a draft or admitting snow, sleet or ram.

The invention aims to provide a ventilator that can be advantageouslyused in sick chambers for maintaining the atmosphere in the chamber in asanitary condition, the construction of the ventilator preventing draftsand the admittance of rain or snow that might be detrimental to theoccupants of the chamber. In this connection I provide a ventilator withmeans for preventing too strong a draft of'air through the same, alsothe passage of cinders, dust or other matter through the ventilator intothe compartment. To this end, I have devised an adjustable ventilatorthat can be fitted in windowframes of various widths and easily retainedin an operable position by the upper sash of the window. 7

The ventilator is made of light and durable metal that can be finishedto harmonize with the finish of the window-frame and sash, whereby theventilator will be highly noticeable from the interior or exterior of abuilding.

The invention will be hereinafter described in detail and thenspecifically claimed, and now reference will be had to the drawingforming a part of this application, wherein there is illustrated thepreferred embodiments of the invention, but it is to be understood thatthe structural elements thereof can be varied or changed withoutdeparting from the spirit and scope of the invention.

equipped with the ventilator, Fig. '2 is a horizontal sectional view ofthe ventilator.

partly broken away, Fig. 3 is an elevation of tilator partly broken awayand partly in section.

In carrying my invention into 'effect,.I.

construct the ventilator in two telescopic parts, said parts beingadjustable length-J wise, whereby the ends of the ventilator can befitted against the sides of the windowframe. Each part of the ventilatorcomprises an inner rectangular casing 1,'an outer cylindrical casing 2,and an intermediate connecting casing 3, all of these casings of eachpart being formed integral of metal stamped and bent to conform to thedesired shape.

The casing 1 is rectangular in cross section with open ends 4, and theinner side wall 5 of said casing is provided with a plurality oflongitudinally disposed openings 6. In the casing 1 and extending fromone end thereof to the opposite end is a diagonally disposed screen orframe of wire gauze 7 adapted to prevent cinders and foreign matter frompassing through the casing 1 and the openings 6 into the compartment tobe ventilated.

The casing 2 has the outer ends thereof provided with funnel-shapeddeflectors 8 and arranged at the ends of said casing are flap valvescomprising members 9 and 10, the members 9 being adapted to close theends of the casing 2 when too strong wind is enforced, which would causea draft in the compartment to be ventilated. The flap valves areretained in position by vertical pivot pins 11 carried by the casing 2.

The intermediate casing 3 simply establishes communication between thecasings 1 and 2, and in order that the ventilator can be convenientlyretained withina window-' Patented Jan. 4, 1910.

Referring'to the drawings :Fignre 1 is a 1 I vertical sectlonal view. ofa wmdow-frame.

frame, the casing 1 is offset relative tothe 3 casing 3, whereby the toprail 12 of an upper sash 13 can be moved into engagement with the casing1 to positively hold the same between the top rail 12 and the top of thewindow-frame 14. The slight offset, which I have indicated, as at 15,prevents the easings 2 and 3 from sagging relative to the easing 1. Thecylindrical casing 2 protrudes beyond the edge of the window-frame 14,

air to enter the ventilator.

and by being open at both ends allowsa draft to pass through the casing,and besides some of the air passing through the casings 3 and 1 into thecompartment, the passage of air in the casing 2 creates a suction thatis adapted to remove foul air from the upper partof the compartment. Itis impossible for wind to blow directly into the ventilator except fromthe ends thereof, consequently while air may be freely circulated uponthe exterior of the building, it will be only possible for a certainamount of this This is particularly true in connection with the flurriesof a snow storm, and if snow should pass the flap valves, it isimmediately retarded by the screens within the casing 1.

I reserve the right to use the ventilator in connection with the silland lower sash of a window frame, also to install the same as a transom.

Having now described my invention what ,I claim as new, is

.. sash of a window and the frame thereof, sald casing. having the innerwall there- 1. A ventilator comprising two sections, one telescopingwithin the other and each comprising an inner rectangular casing adaptedto be mounted between the upper of provided with openings, said sectionfurther comprising an outer cylindrical casing having a funnel-shapeddeflector at one ;end, and said section further comprising anintermediate casing connecting the inner cas ing to the outer casing andcommunicating therewith, said inner casing off-set with respect to saidintermediate casing, a screen arranged within said inner casing, and aflap valve hinged to that end of the casing provided with the deflector.

2. A ventilator comprising two sections, one telescoping within theother and each comprising an inner rectangular casing adapted tobe'mounted between the upper sash of a window and the frame thereof.said casing having the inner wall thereof provided with openings, saidsection further comprising an outer cylindrical casing having afunnel-shaped deflector at one end,

and said section further comprising anintermediate casing and connectingthe inner casing to the outer casing and communicating therewith, saidinner casing off-set with respect to said intermediate casing, a screenarranged'within said inner casing, and a flap valve hinged to that endof the casing provided with the deflector, each of said casings of thesame length throughout and said screen extending from the outer uppercorner of said casing and disposed at an inclination.

73. A ventilator comprising two sections, one telescoping within theother and each comprising an inner rectangular casing adapted to bemounted between the upper sash of a window and the frame thereof, saidcasing having the inner wall thereof provided with openings, said casingfurther comprising an outer cylindrical casing having a funnel-shapeddeflector at one end, and said section further comprising anintermediate casing and connecting the inner casing to the outer casingand communicating therewith, said inner casing off-set with respect tosaid intermediate casing, a screen arranged within said inner casing,and a flap valve hinged to that end of the casing provided with thedeflector, each of said casings of the same length throughout and saidscreen extending from the outer upper corner of said casing and disposedat an inclination, the openings in the inner wall of the inner casingbeing rectangular in contour.

4. A ventilator comprising two sections, one telescoping within theother and each comprising an inner rectangular casing adapted to bemounted between the upper sash of a. window and the frame thereof, saidcasing having the inner wall thereof provided with openings, said casingfurther comprising an outer cylindrical casing having a funnel-shapeddeflector at one end, and said section further comprising anintermediate casing and connecting the inner casing to the outer casingand communicating therewith, said inner casing off-set with respect tosaid intermediate casing, a screen arranged within said inner casing,and a flap valve hinged to that end of the casing provided with thedeflector, each of said casings of the same length throughout and saidscreen extending from the outer upper corner of said casing and disposedat an inclination, the openings in the inner wall of the inner casingbeing rectangular in contour, said inner casing having open ends, saidintermediate casing having closed ends, and said outer casing havingopen ends.

In testimony wherof I affix my signature in-the presence of twowitnesses.

EDWARD T. SCOTT. VJitnesses MAX H. SRoLovrrz, A. J. Truce.

